/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MovieRenderOverlappedImage.h
Accumulate a single tile to this plane. The raw data will in general be smaller than the full plane. Addtionally, we are only going to be using part of the input plane because the input plane will have unused border areas. The SubRect parameters describe the area inside the source plane.
void AccumulateSinglePlane ( const TArray64< float > & InRawData, FIntPoint InSize, FIntPoint InOffset, float SubpixelOffsetX, float SubpixelOffsetY, FIntPoint SubRectOffset, FIntPoint SubRectSize, const [TArray](API\Runtime\Core\Containers\TArray)< float > & WeightDataX, const [TArray](API\Runtime\Core\Containers\TArray)< float > & WeightDataY )